Fast Spectral Calibration Method of Spectral Imager

Jian-wei WANG; Wei-yan LI; Jian-ying SUN; Bing LI; Xin-wen CHEN; Zheng TAN; Na ZHAO; Yang-yang LIU; Qun-bo LÜ

doi:10.3964/j.issn.1000-0593(2022)07-2013-05

Spectroscopy and Spectral Analysis, Volume. 42, Issue 7, 2013(2022)

Fast Spectral Calibration Method of Spectral Imager

Jian-wei WANG*... Wei-yan LI1;, Jian-ying SUN1;, Bing LI1;, Xin-wen CHEN1;, Zheng TAN1;, Na ZHAO1;, Yang-yang LIU1; 3; and Qun-bo LÜ1; 3; *; |Show fewer author(s)

Author Affiliations

1. The Key Laboratory of Computational Optic Imaging Technology, Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China

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Figures & Tables(11)

Fig. 1. To be calibrated hyperspectral image

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Fig. 2. Schematic diagram of the principle of spectral calibration

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Fig. 3. Spectral calibration data

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Fig. 4. Measured spectral response

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Fig. 5. Wavelength-pixel position relationship

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Fig. 6. Standard spectrometer and spectral imager collect data and fit curves

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Fig. 7. Hyperspectral imager acquires mercury lamp spectral data

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Table 1. Monochromator output wavelength (nm)

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Table 1. Monochromator output wavelength (nm)

波长/nm
416	436	456	476	499	539	579	622	682	766	879
417	437	457	477	501	541	581	625	686	771	885
418	438	458	478	503	543	583	628	690	776	891
419	439	459	479	505	545	585	631	694	781	897
420	440	460	480	507	547	587	634	698	786	903
421	441	461	481	509	549	589	637	702	791	909
422	442	462	482	511	551	591	640	706	796	915
423	443	463	483	513	553	593	643	710	801
424	444	464	484	515	555	595	646	714	807
425	445	465	485	517	557	597	649	718	813
426	446	466	486	519	559	599	652	722	819
427	447	467	487	521	561	601	655	726	825
428	448	468	488	523	563	603	658	730	831
429	449	469	489	525	565	605	661	734	837
430	450	470	490	527	567	607	664	738	843
431	451	471	491	529	569	609	667	742	849
432	452	472	492	531	571	611	670	746	855
433	453	473	493	533	573	613	673	751	861
434	454	474	495	535	575	616	676	756	867
435	455	475	497	537	577	619	679	761	873

Table 2. Spectral resolution calculation
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Table 2. Spectral resolution calculation
波长/nm 421 895
标准光谱仪测量单色光带宽 $\sqrt[]{d_{1}^{2} - 1 . 5^{2}}$ /nm 4.43 3.04
光谱成像仪输出光谱带宽d₂/nm 5.06 17.69
光谱成像仪光谱分辨率d₃/nm 2.45 17.43

Table 3. Low-pressure mercury lamp spectrum
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Table 3. Low-pressure mercury lamp spectrum
编号波长/nm 编号波长/nm
1 253.65 7 504.66
2 296.73 8 407.78
3 302.15 9 435.84
4 313.16 10 546.07
5 334.15 11 576.96
6 365.01 12 579.06

Table 4. Wavelength deviation of hyperspectral imager
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Table 4. Wavelength deviation of hyperspectral imager
列数波长9
偏差/nm 波长10
偏差/nm 波长11、 12
偏差/nm
400 -0.333 9 -0.096 7 -0.091 4
900 -0.278 6 -0.239 8 -0.257 2
1 200 -0.171 6 -0.032 1 -0.120 4
1 600 -0.123 9 0.163 8 0.288 1
1 800 -0.051 2 0.246 4 0.181 5

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Jian-wei WANG, Wei-yan LI, Jian-ying SUN, Bing LI, Xin-wen CHEN, Zheng TAN, Na ZHAO, Yang-yang LIU, Qun-bo LÜ. Fast Spectral Calibration Method of Spectral Imager[J]. Spectroscopy and Spectral Analysis, 2022, 42(7): 2013

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